1 /* 2 * Copyright (C) 2014 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef NETD_SERVER_VIRTUAL_NETWORK_H 18 #define NETD_SERVER_VIRTUAL_NETWORK_H 19 20 #include <set> 21 22 #include "Network.h" 23 #include "UidRanges.h" 24 25 // A VirtualNetwork may be "secure" or not. 26 // 27 // A secure VPN is the usual type of VPN that grabs the default route (and thus all user traffic). 28 // Only a few privileged UIDs may skip the VPN and go directly to the underlying physical network. 29 // 30 // A non-secure VPN ("bypassable" VPN) also grabs all user traffic by default. But all apps are 31 // permitted to skip it and pick any other network for their connections. 32 class VirtualNetwork : public Network { 33 public: 34 VirtualNetwork(unsigned netId, bool hasDns, bool secure); 35 virtual ~VirtualNetwork(); 36 37 bool getHasDns() const; 38 bool isSecure() const; 39 bool appliesToUser(uid_t uid) const; 40 41 int addUsers(const UidRanges& uidRanges, 42 const std::set<uid_t>& protectableUsers) WARN_UNUSED_RESULT; 43 int removeUsers(const UidRanges& uidRanges, 44 const std::set<uid_t>& protectableUsers) WARN_UNUSED_RESULT; 45 46 private: 47 Type getType() const override; 48 int addInterface(const std::string& interface) override WARN_UNUSED_RESULT; 49 int removeInterface(const std::string& interface) override WARN_UNUSED_RESULT; 50 int maybeCloseSockets(bool add, const UidRanges& uidRanges, 51 const std::set<uid_t>& protectableUsers); 52 53 const bool mHasDns; 54 const bool mSecure; 55 UidRanges mUidRanges; 56 }; 57 58 #endif // NETD_SERVER_VIRTUAL_NETWORK_H 59